The breast cancer you had was oestrogen receptor positive, that means it was being fuelled or 'fed' by the hormone oestrogen.

The tablet you have been prescribed will either block the oestrogen receptors on breast cancer cells (Tamoxifen) or decrease the amount of oestrogen the body makes (Anastrozole, Letrozole, Exemestane).

Take your tablet at the same time every day - you can choose when.

If you forget to take it, take it as soon as you remember, unless it is two to three hours before your next dose; do not take a double dose. 

Endocrine therapy is used to try to stop the growth of breast cancer and can help prevent it coming back - it is therefore important that you keep taking it.  

Taking these tablets can cause side-effects; these normally improve within a few months.

Drugs

These are the Endocrine drugs we use for treating breast cancer; these pages will give you a general overview of the drug, how it works and the possible side-effects.

Letrozole
Anastrozole
Exemestane
Tamoxifen